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Contents
module Picky
# Collection class for qualifiers.
#
class QualifierMapper
attr_reader :mapping
#
#
def initialize categories
@mapping = {}
categories.each { |category| add category }
end
#
#
def add category
category.qualifiers.each do |qualifier|
sym_qualifier = qualifier.intern
Picky.logger.warn %Q{Warning: Qualifier "#{qualifier}" already mapped to category #{mapping[sym_qualifier].identifier} (ambiguous qualifier mapping).} if mapping.has_key? sym_qualifier
mapping[sym_qualifier] = category
end
end
# Normalizes the given qualifier.
#
# Returns nil if it is not allowed, the normalized qualifier if it is.
#
def map qualifier
return nil if qualifier.empty?
mapping[qualifier.intern]
end
# Restricts the given categories.
#
def restrict user_qualified
if @restricted
user_qualified ? @restricted & user_qualified : @restricted
else
user_qualified
end
end
def restrict_to *qualifiers
@restricted = qualifiers.map { |qualifier| map qualifier }.compact
end
end
end
Version data entries
53 entries across 53 versions & 1 rubygems